Structural Engineering and Mechanics

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Analysis of hysteresis rule of energy-saving block and invisible multi-ribbed frame composite wall

  • Lin, Qiang (Shool of Civil Engineering, Huaqiao University) ;
  • Li, Sheng-cai (Shool of Civil Engineering, Huaqiao University) ;
  • Zhu, Yongfu (Minnan University of Science and Technology, Fujian Engineering Research Center for Construction and Management of Green Buildings)
  • Received : 2020.02.18
  • Accepted : 2020.09.29
  • Published : 2021.01.25
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Abstract

The energy-saving block and invisible multi-ribbed frame composite wall (EBIMFCW) is a new type of load-bearing wall. The study of this paper focus on it is hysteresis rule under horizontal cyclic loading. Firstly, based on the experimental data of the twelve specimens under horizontal cyclic loading, the influence of two important parameters of axial compression ratio and shear-span ratio on the restoring force model was analyzed. Secondly, a tetra-linear restoring force model considering four feature points and the degradation law of unloading stiffness was established by combining theoretical analysis and regression analysis of experimental data, and the theoretical formula of the peak load of the EBIMFCW was derived. Finally, the hysteretic path of the restoring force model was determined by analyzing the hysteresis characteristics of the typical hysteresis loop. The results show that the curves calculated by the tetra-linear restoring force model in this paper agree well with the experimental curves, especially the calculated values of the peak load of the wall are very close to the experimental values, which can provide a reference for the elastic-plastic analysis of the EBIMFCW.

Keywords

Acknowledgement

The authors are very grateful to the National Natural Science Foundation of China (No. 51578253), the Scientific and Technological Planning Guiding Project of Fujian Province (2020Y0087), the Scientific and Technological Planning Project of Quanzhou City (No. 2018C083R), and the Subsidized Project for Postgraduates' Innovative Fund in Scientific Research of Huaqiao University (No. 18011086004) for the financial support of this work.

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